Abstract: A sensor for measuring a characteristic of a length of a pipeline, wherein the sensor comprises a sensor length arranged to extend helically along the pipeline length; and the sensor length extends parallel to a ridge extending radially from a layer of a wall of the pipeline length. A length of pipeline with an integrated sensor length may be constructed by bending a first strip of material into a helical form that comprises a first ridge; bending a second strip of material into a helical form, wherein the second strip of material comprises a second ridge; forming a tubular shape from the first and second strips of material, wherein the first strip of material at least partially surrounds the second strip of material, and the first ridge engages the second ridge; and wrapping a sensor length about the tubular shape.

Abstract: An incendiary capsule 10 has a body 14 forming a single compartment containing a first part 18 of a two part ignition system and a quantity of a pyrotechnic heat source (PHS) 16. The capsule 10 is initiated by injecting, when ready for use, a quantity of a second part of the two part ignition system. The ignition system generates sufficient heat to initiate the PHS 16, which burns at a substantially higher temperature than the ignition system.

Abstract: A system that implements a data storage service may store data for a database table in multiple replicated partitions on respective storage nodes. In response to a request to back up a table, the service may back up individual partitions of the table to a remote storage system independently and (in some cases) in parallel, and may update (or create) and store metadata about the table and its partitions on storage nodes of the data storage service and/or in the remote storage system. Backing up each partition may include exporting it from the database in which the table is stored, packaging and compressing the exported partition for upload, and uploading the exported, packaged, and compressed partition to the remote storage system. The remote storage system may be a key-value durable storage system in which each backed-up partition is accessible using its partition identifier as the key.

Abstract: A charging system (10) for an aerosol-generating device (12) includes a charging unit (14). The charging unit includes a body (20) at least partially defining a receiving volume (22). The receiving volume is sized to receive the elongate aerosol-generating device through an open top end in a plurality of orientations. A charging interface is coupled to the body and includes a biasing element and an electrical contact. The biasing element is configured to apply a force on the aerosol-generating device that causes an electrical contact of the aerosol-generating device to electrically engage the electrical contact of the charging interface when the aerosol-generating device rests on the charging unit.

Abstract: A fuel spray nozzle for a gas turbine engine, the fuel spray nozzle arranged to mix fuel and air and provide the mixture to a combustor of the engine and including: a first fuel supply conduit arranged to provide fuel to be mixed with air in a first ratio; a second fuel supply conduit arranged to provide fuel to be mixed with air in a second ratio, having a lower proportion of fuel than the first ratio; and a staging valve arranged to control the relative proportions of fuel provided through the first fuel supply conduit and the second fuel supply conduit, such that an increase or decrease in the flow in the first fuel supply conduit is accompanied by a corresponding decrease or increase in the flow in the second fuel supply conduit.

Abstract: A sensor for measuring a characteristic of a length of a pipeline, wherein the sensor comprises a sensor length arranged to extend helically along the pipeline length; and the sensor length extends parallel to a ridge extending radially from a layer of a wall of the pipeline length. A length of pipeline with an integrated sensor length may be constructed by bending a first strip of material into a helical form that comprises a first ridge; bending a second strip of material into a helical form, wherein the second strip of material comprises a second ridge; forming a tubular shape from the first and second strips of material, wherein the first strip of material at least partially surrounds the second strip of material, and the first ridge engages the second ridge; and wrapping a sensor length about the tubular shape.

Abstract: A tubular installation apparatus (1) including a lay tower (2) mounted to a support structure (4). The lay tower (2) is configured to lower a tubular section along a firing line (L) extending along the lay tower (2). A magazine (3) is removably mounted to the lay tower (2) and configured to be pre-loaded with a plurality of tubular sections. A feed mechanism (23, 25) is configured to feed one or more tubular sections from the magazine (3) to the firing line (L) of the lay tower (2) for connection to the end of a catenary.

Abstract: A charging system (10) for an aerosol-generating device (12) includes a charging unit (14). The charging unit includes a body (20) at least partially defining a receiving volume (22). The receiving volume is sized to receive the elongate aerosol-generating device through an open top end in a plurality of orientations. A charging interface is coupled to the body and includes a biasing element and an electrical contact. The biasing element is configured to apply a force on the aerosol-generating device that causes an electrical contact of the aerosol-generating device to electrically engage the electrical contact of the charging interface when the aerosol-generating device rests on the charging unit.

Abstract: A method of reducing rotor bow in a high pressure rotor of a gas turbine engine that has in axial flow a low pressure rotor and a high pressure rotor. The method involves storing bleed air from the gas turbine engine when the engine is running to provide stored pneumatic energy; and using that stored pneumatic energy after the engine has been shut-down to rotate the high pressure rotor at a speed and for a duration that reduces rotor bow. A gas turbine engine wherein rotor bow in the high pressure rotor after engine shut-down has been reduced by carrying out the aforesaid method is also disclosed.

Abstract: A tubular installation apparatus (1) including a lay tower (2) mounted to a support structure (4). The lay tower (2) is configured to lower a tubular section along a firing line (L) extending along the lay tower (2). A magazine (3) is removably mounted to the lay tower (2) and configured to be pre-loaded with a plurality of tubular sections. A feed mechanism (23, 25) is configured to feed one or more tubular sections from the magazine (3) to the firing line (L) of the lay tower (2) for connection to the end of a catenary.

Abstract: A fuel spray nozzle for a gas turbine engine, the fuel spray nozzle arranged to mix fuel and air and provide the mixture to a combustor of the engine and including: a first fuel supply conduit arranged to provide fuel to be mixed with air in a first ratio; a second fuel supply conduit arranged to provide fuel to be mixed with air in a second ratio, having a lower proportion of fuel than the first ratio; and a staging valve arranged to control the relative proportions of fuel provided through the first fuel supply conduit and the second fuel supply conduit, such that an increase or decrease in the flow in the first fuel supply conduit is accompanied by a corresponding decrease or increase in the flow in the second fuel supply conduit.

Abstract: A subsea clearance apparatus (1) includes a chassis (2), fore and aft skids (3, 4) spaced along a principal axis (P) of the apparatus (1), and a pair of flanks (22a, 22b) with a plurality of tines (5) depending from the flanks (22a, 22b). The tines (5) are spaced transversely with respect to the principal axis (P) and pitched toward the fore of the apparatus (1). In use, the chassis (2) is spaced from the seabed (S) by the skids (3, 4) as the apparatus (1) is propelled therealong such that the tines (5) engage and deflect away from the principle axis (P) obstructions which are larger than a predetermined size and which protrude by a predetermined amount from the seabed (S).

Abstract: A combustion staging system includes a splitting unit which receives a metered fuel flow and controllably splits the received fuel flow into pilot and mains flows. Pilot and mains fuel manifolds distribute fuel from the splitting unit to the pilot and mains stages. The splitting unit selects and deselects pilot-only operation. Both pilot and mains manifolds are selectable for pilot and mains operation. A cooling flow recirculation line has a delivery section arranged to provide a cooling flow of fuel to the mains manifold when it is deselected during pilot-only operation. Cooling flow enters the delivery section from a high pressure fuel zone of the engine and exits the return section to a low pressure fuel zone of the engine. A controller adjusts the splitting unit during pilot-only operation to partially select the mains manifold thereby increasing the pressure in the mains manifold to meet a target fuel pressure therein.

Abstract: A method of reducing rotor bow in a high pressure rotor of a gas turbine engine that has in axial flow a low pressure rotor and a high pressure rotor. The method involves storing bleed air from the gas turbine engine when the engine is running to provide stored pneumatic energy; and using that stored pneumatic energy after the engine has been shut-down to rotate the high pressure rotor at a speed and for a duration that reduces rotor bow. A gas turbine engine wherein rotor bow in the high pressure rotor after engine shut-down has been reduced by carrying out the aforesaid method is also disclosed.

Abstract: The system invention describes an support and improved method of application and removal. The support, comprised of a network of flexible, non-porous, multi-lumen tubing interlaces at a plurality of junctions to form a lattice structure. Apertures designed to accommodate boney prominences also permit air or water to reach the skin underneath and encourage rapid fluid flow internally through the lattice. A hydrophobic, thermal-resistant, flowable padding layer is injected within a secondary lumen to the lattice structure, spanning its complete surface area. As a result, the breathability of the support is not affected by this padding layer because it mirrors the apertures of the lattice. At least one liquid is injected into the structure and configured to transform into a solid when acted on by an external mechanical stimulus.

Abstract: An incendiary capsule 10 has a body 14 forming a single compartment containing a first part 18 of a two part ignition system and a quantity of a pyrotechnic heat source (PHS) 16. The capsule 10 is initiated by injecting, when ready for use, a quantity of a second part of the two part ignition system. The ignition system generates sufficient heat to initiate the PHS 16, which burns at a substantially higher temperature than the ignition system.

Abstract: An ignition formulation for an incendiary material is disclosed. The ignition formulation comprises an initiator capable of reacting exothermically with the incendiary material to an extent sufficient to generate a flame when contacted with the incendiary material and a non-aqueous inhibitor capable of slowing the rate of exothermic reaction between the incendiary material and the initiator, thereby providing a delay period between contact of the ignition formulation with the incendiary material and generation of the flame. The non-aqueous inhibitor may be a compound selected from a group comprising, for example, long chain (C5-C12) alcohols, alkanes, alkenes, cycloalkanes, ethers, esters, ketones, carboxylic acids, aromatic hydrocarbons, organonitrates, diesel, biodiesel, kerosene, modified kerosene and oils.